GRAUPNER Li-Io 1100 batteries offer a wide safety margin thanks to their metal jacket, the special Li-Io material used and a type of integral safety seal. If the cell is overcharged or short-circuited, the cell is destroyed internally before it burns or is able to cause excessive damage. The metal jacket also makes the cell suitable for soldering and for assembling into battery packs. The high continuous current capability of 20 A (30 A peak) makes it suitable as a replacement for the heavier 2/3 A NiMH cells, for example.